Isovector Particle-Number Projection Approach in Quasiparticle Representation

被引：3
|
作者：
Allal, N. H. [1 ,2 ]
Fellah, M. [1 ,2 ]
Hammache, F. [1 ]
Oudih, M. R. [1 ]
机构：
[1] USTHB, Lab Phys Theor, Fac Phys, Bab Ezzouar 16111, Alger, Algeria
[2] Ctr Rech Nucl Alger CRNA COMENA, Algiers, Alger, Algeria
来源：
4TH INTERNATIONAL CONGRESS IN ADVANCES IN APPLIED PHYSICS AND MATERIALS SCIENCE (APMAS 2014) | 2015年 / 1653卷
关键词：
Nuclear structure; Neutron-proton isovector pairing; Particle-number projection; NUCLEI; ENERGY;
D O I：
10.1063/1.4914202
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A particle-number projection approach in quasiparticle representation is proposed in the isovector pairing case. A new expression of the projected ground-state is proposed. It is very similar to the one used in the pairing between like-particles case. The expressions of the variance on the particle-number as well as the energy are then derived. The formalism is numerically tested using the one-level schematic model. It is shown that the numerical results of the present work are the same as those obtained using the particle representation approach: the convergence is rapid and the particle-number fluctuations are totally eliminated. Moreover the present method is less time consuming.
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收藏
页数：7
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